Hitech - Replacement 3SNAAA60HSJ1 Cordless Phone Battery for Some Motorola Telephones, Including: E33, MD7151, SD4551 Capacity: 700mAh Voltage: 3.6V Chemistry: Ni-MH Equivalent to Sanik 3SNAAA55HSJ1, 3SNAAA60HSJ1 See product description for list of compatible telephones